Le Minh, former Valve developer and creator of Counter-Strike, has said he's seen concept artwork for the long-sought-after Half-Life 3, admitting it's "kind of public knowledge" Valve is working on it in secret.

He "did see something" belonging to the Half-Life universe, and will "go out on a limb" to say it's Half-Life 3. Minh also saw the "new Left 4 Dead" which "looks great" .

Developer Turtle Rock set the zombie genre ablaze when they introduced Left 4 Dead, a game that is unforgiving at its co-operative core. With their new sci-fi co-op Evolve they want to take it a step further.

Going off on your own in L4D meant certain doom, but there wasn't any real 'role' for the characters, explains Turtle. With Evolve they've made sure they're unique and not totally helpless.